Situated on the northeast tip of Mexico's Yucatan Peninsula, Cancun is a popular Caribbean tourist destination. Next to 14 miles of beaches, you'll find a wide variety of resorts, spas, clubs, and malls. Peak season in Cancun tends to run from December to April. Prices in both airfare and hotel increase dramatically during these times, while dropping in the (northern hemisphere) summer and early autumn months. Late June is especially hot, so come prepared or try the off season.